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Remove/Install Bleed Line With Engine Oil Filler Neck - AR01.20-P-0022MRI

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Engine 264 in model 205, 253 

MODIFICATION NOTES

18.04.2019 Method description adapted. Operation step 4  
17.04.2019 AS49.00-Z-0001-01A, added. Step 9  
Fig 1: Bleed Line With Engine Oil Filler Neck Components Location - Engine 264 In Model 253 (Shown With Code 494)
G14470543Courtesy of MERCEDES-BENZ USA

Shown with code 494 (USA version) 

G14470544Courtesy of MERCEDES-BENZ USA
CAUTION Risk of injury  to skin and eyes due to handling of engine oil. Risk of poisoning  caused by swallowing engine oil Wear protective gloves, protective clothing and safety glasses.
Do not fill engine oil into beverage containers.
AS18.00-Z-0001-01A
Notes on avoiding damage through contamination and foreign objects   AH00.00-P-5000-01A
REMOVINGINSTALLING Remove/install     
1 Loosen top rear engine cover and fold to one side. INSTALLATION IMPORTANT Only install upper engine cover after the leak test. AR01.10-P-2408MRI 
2 Release and disconnect electrical connector of pressure sensor downstream of air filter (B28/11).    
3 Remove center and rear sections of lower engine compartment lining. INSTALLATION IMPORTANT Only install center and rear lower rear engine compartment paneling again after leak test. AR61.20-P-1105LW
4 Release and disconnect electrical connector (4). Engine 264 in model 205, 253
with code 460 (Canada version)
Engine 264 in model 205, 253
with code 494 (US version)
Engine 264 in model 205, 253
with code 835 (South Korea version)
Engine 264 in model 205, 253
with code 945 (China Stage 6 exhaust treatment)
 
Information on preventing damage to electronic components due to electrostatic discharge   AH54.00-P-0001-01A
5 Remove screw (2) and pull bleed line (1) out of crankcase. INSTALLATION IMPORTANT Replace sealing ring.
TORQUE SPECIFICATION Bolt, crankcase ventilation system vent line to crankcase
*BA01.20-P-1005-03B 
6 Remove screw/bolts (3). TORQUE SPECIFICATION Bolt, filler neck to cylinder head cover *BA01.20-P-1003-03B 
7 Unclip bleed line (1) and remove. INSTALLATION IMPORTANT Replace sealing ring.  
8 Install in the reverse order.    
WARNING Risk of burn injuries  , suffocation and poisoning when working on the exhaust system and the components connected to it. Risk of suffocation and risk of poisoning caused by inhalation of gaseous and solid components of the exhaust. Risk of poisoning  caused by skin contact with solid components of the exhaust. Wear protective clothing and safety glasses. Use the extraction system. Move people out of the hazard area. AS49.00-Z-0001-01A
WARNING Risk of accident  from vehicle starting off by itself when engine running. Risk of injury  (bruises and burns) resulting from working on the engine while it is being started or when it is running. Secure vehicle to prevent it from starting off by itself. Wear closed and snug-fitting work clothes. Do not touch hot or rotating parts. AS00.00-Z-0005-01A
9 Perform engine test run. While doing so, check engine for proper operation and leak tightness.    
10 Install center and rear lower engine compartment lining.   AR61.20-P-1105LW
11 Install upper engine cover.   AR01.10-P-2405MRI 
CRANKCASE VENTILATION SYSTEM, CYLINDER HEAD COVER

Number Designation Engine 264
BA01.20-P-1003-03B Bolt, filler neck to cylinder head cover Nm 9
CRANKCASE VENTILATION SYSTEM, CYLINDER HEAD COVER

Number Designation Engine 264
BA01.20-P-1005-03B Bolt, crankcase ventilation system vent line to crankcase Nm 9